Water heater



W. COLEBRUOK.

WATER HEATER.

vAPPLICANON FILED SEPT. 2o, |920.

1,419,225. Patented June 13, 1922.

U Nl TE ib y `.fi "i" A 'il S Param omcaV WILLIHAM CQLEBROOK, OF OURBAN;NATAL, SOUTH AFRICA.

WATER Application lcd September stream by means of an apparatus whichcan be attached to any suitable water supply pipe. l

One of the objects of the present invention is to provide means torheating water which is led into the apparatus and caused to iiow in athin spiral stream around or near a source ot heat, consequentlyresulting in a continuous flow ot heated water directly the apparatus isset in action. The iiow. continues until the heat or water supply is cutoil". This has manifest advantages over the' known apparatus wherein abulk ot water' (as distinct trom a. thin flowing stream) has to beslowly heated, used, the apparatus refilled, and action started again.

Any suitable source ot heat may be used in carrying out the principlesindicated above,'and a practical example showing the use ot electricheating elements is hereinafter described and illustrated in theaccompanying drawing, wherein:

Figure l is a vertical section.

Figure 2 is a detail elevation partly in section of two interior membersdetached;

and, e

Figure 3 is a fragmentary view section (Figure l) enlarged.

In the drawings, a is an inner core member which may be packed withasbestos or the like. This is surrounded by heat insulation packing lv,against which are arranged electric heating elements c enclosed in micaor other insulation (l. A further cylinder e fits over the heatingelement, and cylinder e is :Formed with a spiral projection f, which maybe metal wire. `An outer composite cover consisting of cylinder g'andshell h fits tightly over the projection f, to leave a spiral passagetherebetween.

Between g and 71, eXtra heating elements o and packing b are disposed. Aconical or the HEATER.

specification of Lettersratent. Patented Juil@ 13, 1922 20, 1920. SerialvNo. 411,592.

water inlet i is secured to the bottom of the cylinder g, and a rim j onthe bottom of the shell ,71. lies thereagainst when assembled. Thebottom of cylinder@7 is closed at e, so that water entering at the union7c travels into the spiral passage between e and g, and thence upwardsto the exit Z, being heated in its passage by theelements c and c.

Any other means of causing a thin stream oi water to travel in a spiralpassage over a source of heat continuously from inlet c' to outlet Z(such as a thin spiral tube) may be substituted. y l

A top cap m is secured to the outer shell 7L and a central screwed rod ncompletes the iitment. Oriiices o are proivded for the electrical leadsfrom the elements c and c.

l. A water heater including a pair of tubular members arranged toprovide a space therebetween7 a member arranged in said space betweenthe tubular members to provide a spiral water passageway therebetween,

heat insulating means surrounding the outer "tubular member, electricalheating meansy embedded inthe insulation, a cap tor one end of thetubular members, an inlet spout carried by the opposite end of thetubular members and arranged in communication with the `outer end of thespiral passageway provided therebetween. and an exterior casing arrangedbetween the said cap and the inlet spout.

2. A water heater including a pair of `tubular members arranged toprovide a space therebetween,means arranged in said spa-ce between thetubular members to provide a `spiral water passage, a heat insulatingcovering for the inner tace of the inner tubular member, aninsulatingcovering for the outer tubular member, electrical heating means embeddedin the insulation for both the inner and outer tubular members, a capfor one end ot the tubular members, a spout for the opposite end ot saidmembers and means Ator holding the cap in assembled relation to saidtubular members. l

A water heater comprising a core member, a layer ot heat insulationlying therearound, electric heating elements suitably insulated disposedon said heat insulation, a

i surrounding cylinder fitting over the aforesaid assembly of featuresagainst the heating elements, a spml projecten en Said SurroundingCylinder, un outer @lnder tightly fitting agamst the Spiral projectionto wonsituiie n spiral Water passage, and an outer casing spaced Vfromthe last mentionec outer Cylinder by heating elements, and heatinmlleiiifm, them being n mmble cover to the device, water inlet'. :mdoutlet :and means to lead off the eectl'ica] wires.

Tn testmouy Wl'el'eo'lf I have n'xed my signature hereto this Fust dayof September, 1920.

XVILLIAM GOLEBROOK.

